Implement holder



FIG. 1 is a right side elevational view of an implement holder showing our new design, the left side view being a mirror image of that shown;

FIG. 2 is an enlarged, fragmentary perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for an implement holder, as shown and described. 